Fixes #38031 - Use the same routes constraints as Foreman

[ofedoren]

Overview of Changes

• Somewhat reverts and updates 73bb74a.

Implementation Considerations

• Without this change GET /api/v2/hosts/<fqdn_or_id>/power is not recognized in API calls, even though it's listed internally (e.g. rails routes command) on Rails 7.0.

Testing Steps

• I've tried to write a test, but locally it didn't discover this issue (test passed), I've tested it by running the app with/out this patch checked on hosts index page the power state icons (they should not be grey for real machines) or just check in the logs for failed requests.

Checklists

• I am familiar with the contributing guidelines.
• [?] I have added relevant tests for my changes.
• [?] I have updated the documentation accordingly.

Additional Notes

• Doesn't depend on any other PR, but to observe the issue, check with Fixes #37825 - Upgrade Rails to 7.0 foreman#10299.

[ekohl]

I'm fine merging this because it exactly matches what's in Foreman, but I wonder if %r{[^/]+} would also work?

[ofedoren]

It should, since it's still accurate than the previous one, but I'd rather sync between core and plugins.

[nofaralfasi]

Thanks @ofedoren!